A Mathematical model for use in studying how to minimize the cost of operating a mechanized retrieval system is developed. Through the use of cost analysis, the model provides a method for comparative evaluation between information retrieval systems. (15 references) (Author/SJ)

The adaptability of the theory of integrative levels to a generalised classification scheme is questioned in that its hypotheses have not been adequately developed and confirmed. It is suggested that not enough cognisance has been taken of twentieth century relativistic thinking in which space-time is treated as a continuum. (14 references)…

Discusses computer programs for aid in teaching, student diagnosis and learning developed by the National Cash Register Company. (MK)

The concern of this paper is to portray a rational response to the problems of providing computerized information services in the medium-to-large university. (6 references) (Author)

The New York Times" Information Bank is described in detail. Scheduled to be in operation in 1972, this project makes available abstracts of newspaper articles for on-line search and retrieval, combined with microform copies of the original articles. (Author)

Natural language systems are seen as falling into two classes - those which process and analyse the input and store it in an ordered fashion, and those which employ controls at the output stage. A variety of systems of both types is reviewed, and their respective features are discussed. (12 references) (Author/NH)

Interaction and interactive systems involve the computer and complexities when an abstracting and indexing service relates to its users. Kinds of interactions are: between government and industrial services; between discipline - and project - oriented services; on a national versus international level; and between the user and the computer. (4…

In the field of United States history, the influence of abstracting and indexing services upon the use of serial literature, because of the highly inadequate retrospective and util recently, current access they afford to it, can only be regarded as a negative use. (Author)

The index entries generated by the Selective Listing in Combinations (SLIC) technique constitute a lattice which is a subset of the power set of the set of descriptors assigned to a document and this fact leads to an improved algorithm for generating SLIC entries. (Author/MF)

The application of concepts for viewing events or relationships in other languages may lead to new and better systems for classing and retrieving data in the English language. (AB)

Ingredients necessary to the successful microfiche program, education of the potential user, and ready availability of the necessary equipment, and demonstration of the economical advantage of microfiche over hard copy are shown. (Author/AB)

A description of the applications of the dial access system at Wayne State and the philosophy behind it. (LS)

It appears that the poor" cataloger can not appease all of the people all of the time. Data elements not put on the catalog card for economy reasons make the reference librarian's job more difficult and leaves the cataloger the diabolical fiend" in-between. (MF)